RFR: 8322174: RISC-V: C2 VectorizedHashCode RVV Version [v26]

[Yuri Gaevsky]

> The patch adds possibility to use RVV instructions for faster vectorizedHashCode calculations on RVV v1.0.0 capable hardware.
> 
> Testing: hotspot/jtreg/compiler/ under QEMU-8.1 with RVV v1.0.0.

Yuri Gaevsky has updated the pull request incrementally with one additional commit since the last revision:

  -more updates per reviewer's suggestions.

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/17413/files
  - new: https://git.openjdk.org/jdk/pull/17413/files/aaf930be..3fd5388c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17413&range=25
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17413&range=24-25

  Stats: 27 lines in 2 files changed: 1 ins; 2 del; 24 mod
  Patch: https://git.openjdk.org/jdk/pull/17413.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17413/head:pull/17413

PR: https://git.openjdk.org/jdk/pull/17413